Booz Allen Hamilton interview questions

I spoke with an employee at a career fair and we seemed to really hit it off. I was offered a phone interview at a set time, and as I prepared for the interview, they called me about 3 hours late after the set time, apologized for calling so late, and then asked me no questions. They just asked if I had any questions for them. I don't know how normal this is, but I would highly recommend talking to someone in person at a career fair if possible.